Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 97, No. 26, Ed. 1 Thursday, March 16, 1972, newspaper, March 16, 1972; (https://texashistory.unt.edu/ark:/67531/metapth1281427/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .